Spain is famous for its weather, Benidorm, Spanish food, it's football team, Barcelona, and basically being a rather sunny place overall â none of these descriptions are incorrect, and in fact they are all entirely true!
As the temperature of the air increases its density decreases. Therefore the thrust produced by the engine decreases. As the air pressure increases, its density increases, causing thrust produced by the engine to increase. Altitude has a double effect on thrust. As the altitude increases, the air becomes colder and denser, up to the beginning of stratosphere. This causes the thrust to increase.
Effect of temperature on root-mean-square speed distributions. As the temperature increases, so does the average kinetic energy (v), resulting in a wider distribution of possible velocities. n = the fraction of molecules. Larger molecular weights narrow the velocity distribution because all particles have the same kinetic energy at the same temperature.